Incorrect information given through to credit bureus

I have been trying for 2 months now to get FNB to correct the information that reflects on my credit report to no avail. I have contacted their chat site, I have made numerous phone calls, you just end up with a never ending transferring of calls and no one seems to know who can help.

They have made an error on my report and I need to apply for new car financing, now it seems like I have twice the amount of debt I actually do have with them. They hurt their customers with their mistakes and they just do not care. Please can someone just help me get the correct information on my report!!